Elevator attachment for operating gates



(No Model.)

P. N. HALLETT. I r ELEVATOR ATTACHMENT FOR OPERATING GATES. No. 425,174.

Patented Apr. 8, 1890.

WITNESSES:

A mm Y8 ms PEYERS co., morn-m UNITED STATES PATENT OFFICE.

FRED N. HALLETT, OF PORTLAND, OREGON.

ELEVATOR ATTACHMENT FOR OPERATING GATES.

SPEGlFICATION formingpart of Letters Patent No. 425,174, dated April 8, 1890.

Application filed December 10, 1889- Serial No. 333,225. (No model.)

To all whom it may concern.-

Be it known that I, FRED N. HALLETT, of Portland, Multnolnah county, State of Oregon, have invented an Improvement in Elevator Attachments for Operating Gates, of which the following is a full, clear, and exact description.

My invention relates to that class of elevator attachments intended to automatically raise and lower the guard-gates of elevatorwells; and the object of my invention is to provide a simple, convenient, and positive means of operating said guard-gates, and also to provide a device that will operate the gates or allow the elevator to pass the same without operating them, as desired.

To this end my invention consists in certain features of construction and combinations of parts which will be hereinafter fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of an elevator and the device for operating the gate, with the elevator disconnected from the device and with the gate closed. Fig. 2' is a side elevation of the elevator in engagement with the gate-operating device and with the gate open, and Fig. 3 is an enlarged detail view showing the manner in which the device is thrown out of gear so as not to operate the elevator-gate.

The elevator A moves up and down the posts B at the sides of the elevator-well in usual manner, and each story of the building, as C, is provided with a gate D at the entrance to the elevator-well, which is raised out of the way, as shown in Fig. 2, when the elevator is to be used at that story.

At each story of the building one post B is provided with brackets E, having a horizontal shaft F mounted therein, one end of the shaft being provided with a gear wheel H and the other with a grooved pulley J. A cord a is attached to the top of the gate and passes over a pulley b above the gate, thence over the pulley (Z, above the'pulley J, once around the pulley J, and thence over the pulleys e and f to the weight g, which is attached to the end of the cord and which acts as a coun the gear on one beginning at a point where it ends on the other. These racks are placed in line with the gear wheel H and just far enough apart for the gear-wheel to pass between them as they rise with the elevator-car A, so that the gear-wheel H will first mesh with the rack K, if the elevator-car is going tical gear-racks K K, which face each other,

up, and then with the rack K", first turning in one direction and then in the opposite direction as it meshes alternately with the two racks. If the elevator-car is coming down, the action will be the same, but in the reverse wheel H and the rack K afterward in the opposite direction.

The shaft F should have sufficient longitudinal movement in its bearings for the gearwheel H to be thrown out of alignment with the racks K and K, so that it will not be actuated by them, and is provided with the following mechanism for moving it in its bearings.

A small grooved pulley h is fixed to the shaft F, or the hub of the pulley J may be grooved, the groove of which is engaged by the forked end of a vertical arm 2', which is attached to the end of a rocker-shaft j. The rocker-shaft j turns in the bearings Z, attached to the post B, at right angles with the shaft F, and the end of the rocker-shaft is provided with laterally-extending arms m, to each of which is attached a cord or rod or, which extends up and down the elevator-well.

If the elevatorcar is to traverse several stories, it will not be necessary to operate the turning it order, the rack K first actuating the gear gates at the intermediate floors, and the device may be thrown out of gear, so as not to operate the gates. By pulling down upon one of the cords n the arm m will be depressed, the rocker-shaft Z turned, and the arm '6 tipped to one side, thus moving the pulley 7i, shaft F, and gear-wheel llinto the position indicated by the dotted lines in Fig. 3 and allowing the racks K K to pass without actuating the same. 3y pulling the cord attached to the other arm at (indicated by dotted lines in Fig. 3) this action will be reversed and the gearwheel H thrown into alignment with the racks K K, so that the gates will be operated as described.

The operation of the device is as follows:

If the elevator is going up and the racks K,

K and gear-wheel ll are in line, the rack K meshing with the gear-wheel, will turn the same and the shaft F, to which it is attached, thus turning the pulley J, winding the cord to upon it, and raising the gate D, to which the cord is attached. As the elevator continues to ascend, the rack K will strike the other side of the gear-wheel ll, thus turning it in the opposite direction, unwinding the cord to from pulley .l and allowing the gateto drop into closed position. It the elevator is descending, the rack R will. first mesh with the gear-wheel II, turn the shaft F, wind the cord (t upon the pulley J, and raise the gate D, and the rack K will unwind the cord and drop the gate. It will be readily seen that the height to which the gate D is raised will depend upon the length of the racks K K, as the gate will continue to go up as long as the raising-rack is in engagement with the gcarovheel ll.

Having thus described my invention, what I claim as new, and desire to seen re by Letters Patent, is

1. An elevator attachment for operating gates, comprising a horizontal shalt provided with a gear-wheel and pulley and mounted in suitable bearings in the side of the elevatorwell, a cord adapted to be wound upon said pulley and connecting over a series of pulleys with the top of the elevator-gate, a pair of gear-racks attached to the elevator and adapted to alternately mesh with said gear-wheel and turn it in opposite directions, and pulley 72., arm 1', roeker-shaft 7', arm m, and cord at, for throwing said gear-wheel in and out of gear with said gear-racks, substantially as described.

2. In an elevator attachment for operating gates, the combination, with the shaft l suitably mounted in the side of the elevator-well and provided with gear-wheel II, and pulleys 7t and J, of means, as arm 1 rocker-shaft 7', arm on, and cord at, for sliding the shaft l in its bearings, substantially as described.

FRED N. IIALLE'JT. \Vitnesses:

ll. M. CAKE, F. R. STRONG. 

